Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id F06CAC433F5 for ; Thu, 11 Nov 2021 14:16:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id DBC8661152 for ; Thu, 11 Nov 2021 14:16:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233955AbhKKOTc (ORCPT ); Thu, 11 Nov 2021 09:19:32 -0500 Received: from mga12.intel.com ([192.55.52.136]:9380 "EHLO mga12.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233893AbhKKOTa (ORCPT ); Thu, 11 Nov 2021 09:19:30 -0500 X-IronPort-AV: E=McAfee;i="6200,9189,10164"; a="212952223" X-IronPort-AV: E=Sophos;i="5.87,226,1631602800"; d="scan'208";a="212952223" Received: from orsmga007.jf.intel.com ([10.7.209.58]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Nov 2021 06:16:40 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.87,226,1631602800"; d="scan'208";a="492556158" Received: from chaop.bj.intel.com ([10.240.192.101]) by orsmga007.jf.intel.com with ESMTP; 11 Nov 2021 06:16:29 -0800 From: Chao Peng To: kvm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-fsdevel@vger.kernel.org, qemu-devel@nongnu.org Cc: Paolo Bonzini , Jonathan Corbet , Sean Christopherson , Vitaly Kuznetsov , Wanpeng Li , Jim Mattson , Joerg Roedel , Thomas Gleixner , Ingo Molnar , Borislav Petkov , x86@kernel.org, "H . Peter Anvin" , Hugh Dickins , Jeff Layton , "J . Bruce Fields" , Andrew Morton , Yu Zhang , Chao Peng , "Kirill A . Shutemov" , luto@kernel.org, john.ji@intel.com, susie.li@intel.com, jun.nakajima@intel.com, dave.hansen@intel.com, ak@linux.intel.com, david@redhat.com Subject: [RFC PATCH 10/13] softmmu/physmem: Add private memory address space Date: Thu, 11 Nov 2021 22:13:49 +0800 Message-Id: <20211111141352.26311-11-chao.p.peng@linux.intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20211111141352.26311-1-chao.p.peng@linux.intel.com> References: <20211111141352.26311-1-chao.p.peng@linux.intel.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Signed-off-by: Chao Peng --- include/exec/address-spaces.h | 2 ++ softmmu/physmem.c | 13 +++++++++++++ 2 files changed, 15 insertions(+) diff --git a/include/exec/address-spaces.h b/include/exec/address-spaces.h index db8bfa9a92..b3f45001c0 100644 --- a/include/exec/address-spaces.h +++ b/include/exec/address-spaces.h @@ -27,6 +27,7 @@ * until a proper bus interface is available. */ MemoryRegion *get_system_memory(void); +MemoryRegion *get_system_private_memory(void); /* Get the root I/O port region. This interface should only be used * temporarily until a proper bus interface is available. @@ -34,6 +35,7 @@ MemoryRegion *get_system_memory(void); MemoryRegion *get_system_io(void); extern AddressSpace address_space_memory; +extern AddressSpace address_space_private_memory; extern AddressSpace address_space_io; #endif diff --git a/softmmu/physmem.c b/softmmu/physmem.c index f4d6eeaa17..a2d339fd88 100644 --- a/softmmu/physmem.c +++ b/softmmu/physmem.c @@ -85,10 +85,13 @@ RAMList ram_list = { .blocks = QLIST_HEAD_INITIALIZER(ram_list.blocks) }; static MemoryRegion *system_memory; +static MemoryRegion *system_private_memory; static MemoryRegion *system_io; AddressSpace address_space_io; AddressSpace address_space_memory; +AddressSpace address_space_private_memory; + static MemoryRegion io_mem_unassigned; @@ -2669,6 +2672,11 @@ static void memory_map_init(void) memory_region_init(system_memory, NULL, "system", UINT64_MAX); address_space_init(&address_space_memory, system_memory, "memory"); + system_private_memory = g_malloc(sizeof(*system_private_memory)); + + memory_region_init(system_private_memory, NULL, "system-private", UINT64_MAX); + address_space_init(&address_space_private_memory, system_private_memory, "private-memory"); + system_io = g_malloc(sizeof(*system_io)); memory_region_init_io(system_io, NULL, &unassigned_io_ops, NULL, "io", 65536); @@ -2680,6 +2688,11 @@ MemoryRegion *get_system_memory(void) return system_memory; } +MemoryRegion *get_system_private_memory(void) +{ + return system_private_memory; +} + MemoryRegion *get_system_io(void) { return system_io; -- 2.17.1